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Finding the Fourth Proportional to 15,073.74, 20,801.75 and 8,359.38

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Solution

The fourth proportional to 15,073.74, 20,801.75 and 8,359.38 is: 11,535.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,073.74 : 20,801.75 = 8,359.38 : x
  2. Step 2: Convert to fraction form
    15,073.74/20,801.75 = 8,359.38/x
  3. Step 3: Cross multiply
    15,073.74x = 20,801.75 × 8,359.38
  4. Step 4: Simplify right side
    15,073.74x = 173,889,691.12
  5. Step 5: Solve for x
    x = 173,889,691.12/15,073.74
  6. Step 6: Final answer
    x = 11,535.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.